Pocket fountain toothbrush



DCC. 20, A. D FERGUSON POCKET FOUNTAIN TOOTHBRUSH Filed Dec. 26, 193C I 22 2@ J2 5f J 30 L/z 44 77 2 J6 /f //2 u 45 .7W 7. 5. 6442/2 /42664 .f4 f2 0 k 5 ,22 ff 4 E 96 4f a 20 7 90 4 JZ fa c9236 54 f2 INVENTOR,

Patented Dec. 20, 1932 UNITED STATES` PATENT' 4This invention relates to fountain brushes and particularly brushesV constructed for use OFFICE AYRULT D. FERGUSON, OF KANSAS CITY, KANSAS POCKET FNTAIN 'rootrniznnsn Application led December 2S, 1930. Serial No. 504,757.

asa tooth brush and has for its primary object the p parts which form a tooth brush,"within-whicli rovision of a novelv combination of may be carried the cleaning compound which is fed fromv the combined magazine-handle as needed.

One ofv invention the primary objects of the present is the contemplation of a tooth brush structure, wherein is incorporated a brush-hea d and a magazine, between which is interposed a coupling formed to allow interchanging of a novel feeding means which may be easily and quickly altered `to convey cleaning compound of different char-` acter from magazine to brush-head.

One of the objects of the instant inventionA to assemble' and is not likely to get outof order.

Minor objects of the invention and speciiicy details of construction will appear during thecourse of* theV detailed specificationnreferringV to the accompanying drawing,

wherein Figure l isavlon'gitudinal central section through a" fountain tooth brush assembly made in accordance with this invention.

Fig. 2 i

s a side elevation of the same-with the head-housing Vremo-ved.

Fig. 3 isan enlarged detail fragmentary v section ythrough a part of the brush assembly at the-cou pling member.

Fig. 4 is an enlarged vertical cross section through the brush taken on line IV-IV of Fig. l.

Fig. 5 is a similar section taken on line Fig. l.

Fig. 6 is a modied form of head-housing for the brush, showing the same in section and in place.

Fig. 7 through t is a perspective sectional View he modied form of head-housing.

Fig. 8 is a fragmentary longitudinal section through amodiiedvform of the brush, taken at the point ofcoupli'ng, andf y l Fig. 9 is va. View of the feeding screw as used iTn the modified form of construction shown in rigzS; 't

Many methods of manufacturing theffounftain tooth brush might be followed without departing fromthis invention and but two' forms are illustrated in theV accompanying drawing; Y y

Lilie reference characters refer to similar parts throughout the many views and the; numeral l2 indicatesV a magazine which .ist formed to serveas a handle'for the brush, and which isv hollow to receive a Cleaning coinpound of any character; AV4 brush head'14', provided withbristles 16l is constructed to be` detachably connected Lto'magazi'ne l2through"4 the'intermediacy" of a coupling 1S whichhasf 70 an oliiening 2O therethrough-communicating with away 22 formed within the' brushhe'ad 14. lVay 22-connects'withxlateral openings y' 24 which a'llowthe` escapelof thecleaningv compoundn to placeswithin thebristles 16' 75 where it*` may bezutilize'd whe`njthel brushis brought'into play; Y A screwlthreadediieck 26, formed onthebrush head'prlll, enters tapped opening 28in theend of couplinglS. The inner side of magazine 12is screw; 80

A.threaded as at' 30, which vthreads" vaire engaged" by coacting threads .32, formed on the outer'y side of the' .offsetV end of coup'linfgflS. Such` offset forms a shdulder against'which bears" the' end of'magazine l2 and another set of 85 threads 36 receive the threaded end ofheadf, housing l38 as" illustrated in Fig. Y l. This head-housing covers the brush'headto pro-y V 'te'ctthe samewhen the appliance is notinusefV and, as shown in' Figs. Gland 7, this part/of 90 the assembly" jay ylloeinade' up in a form different than thatshownin Fig-1.77.1. p l l InI the instance 'shown in"'F igs; 6 and 7 ,v thel head-housing is affleXiblev member 40', which E slidesover the'lbrushheaid 14 in the'mann'er 95' illustrated. 4This yform Vofl head-housing is'A somewhat 'diiferent'thanfthe shown7 iny Fig. 1, Vbut :serves the 'purpose equally' asY well j and may be utilized thecombinationif rdesired. Figs.' 1 to 5 inclusive show a construc-A feeding mechanism, which is adapted for use with cleaning paste.

The internal threads formed withinV magazine 12 extend throughout thelength thereof and piston 42has threads on the annular periphery thereof which engage said threads 80. An .oval-shaped opening 44, formed centrally through piston 42, receives rod 46 which is likewise oval-shaped in cross section in order that the piston 42 may be driven when the rod is'rotated and also to allow movement of piston 42 longitudinally alongsaid rod. To rotate this rod 46, a lmurled cap 48 is provided which serves the two-fold purpose of closing one end of the magazine and acting as an operating member for rod 46. Cap 48 also centers rod 46 and, with bearing plate 50, maintains the same in operative position. Bearing plate 50 is formed to provide a pair o-f diametrically opposite lugs 52, which extend into grooves 54 formed in the side of magazine 12. When moving bearing plate 5l) into the operative position, coupling 18 is removed from magazine 12 and the plate 50 moved into the position shown in Fig. 1. Coupling 18 holds bearing plate 50 in position and the lugs 52 i preclude its rotation with rod 46, the reduced i end 55 of which enters opening 56 of plate 50.

To carry out one of the important featuresV of the invention, this end Vof rod 46 is specially formed to present a squared length 58 which engages means for feeding powder` to the brush head 14 as is hereinafter set down. When the structure is used as illustrated in Figs. 1 to 5hou'ever, a bushing 60 is passed over the squared length 58 which is held in TF' place by a screw 62 in a manner clearly shown in Fig. 8. This construction presents an effective bearing for the end of rod 46 and perforations 64 through plate 50 allow the passage of the cleaning compound to a brush 5 head. The operation of this preferred form is extremely simple, in that merely turning a cap 48 causes rod 46 to rotateV and carry piston 42 longitudinally within magazine 12 to force cleaning compound through per.v L forations 64 and into way 22 through the coupling 18. Y

It is oftentimes desirable to feed cleaning compound in powder form to the brush head of this article. To meet this requirement, a slightly different form of coupling is used as indicated at 80, Fig. 8. This coupling 8O holds plate 50 m position in exactly the same manner as did coupling 18, the main dierence in character between the two being an enlarged opening 82 which houses the helical screw 84. The squared length 58 of rod 46 enters the squared socket 86 formed in screw 84 and turns the same as rod 46 is rotated by the manipulation of cap 48. Obviously the only act necessary to position this screw 84 is the removal of bushing 60 and screw 62. It is to be seen that the feeding means of this fountain brush is within the magazine 'and coupling and that the interchangeable parts thereof are within a coupling which is accessible and easy to interchange. Thus as soon as cleaning compound of a paste form is emptied from the magazine the brush can be altered for use with a cleaning powder with a minimum amount of difficulty. If desired, a clip can be supplied to hold this fountain brush in the pocket as it is being carried and many modifications as to structure might be followed without departing from the spirit of the invention or scope.

of the appended claims.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is: i u

1. In a fountain tooth brush, a magazine; a brushhead; 'a removable coupling between the magazine and head; a rotatable rod extending longitudinally of said magazine; a plurality of grooves 'along the inner face of said magazine; a removable bearing plate for said rod; and lugs integral with said plate and extending into said grooves whereby to prevent rotation of the plate within said magazine, said coupling being positioned against the bearing plate to prevent longitudinal displacement, and to maintain the plate lugs against one end of said grooves.

2. Ina fountain brush of the character described, a hollow, tubular, Y internally threaded magazine, an externally threaded ycoupling engaging some of said screwthreads; a brushhe'ad in communication with said magazine through said coupling; and a screwthreaded piston movable along the remainder of said magazine screwthreads toward and from said coupling. y

In testimony whereof, I hereunto aiix my signature.

AYRAULT D. FERGUSON. 

